An endoscope provides a connector substrate of an endoscope connector to be connected to a processor with a temperature sensor for directly measuring a temperature of the connector substrate, performs control to restrict a power supply (in other words, limit and stop a power supply) from an endoscope power supply circuit according to the measured temperature of the connector substrate (in other words, the endoscope connector), and thereby appropriately manages the temperature of the endoscope connector in the endoscope.